Back in a century, there is trend of using hung locks. A padlock is a type of hung lock. Later, the trend is shifting to the inbuilt door locking system. You have notice, holes inside the wooden door, such holes need to be filled by installing locks. The size of the hole is dependent upon the design of the lock. For filling up locks, measuring tape, waste wood, hole blades, wood glue, electric drill, wood filler, paintbrushes, and sandpaper are required. Locksmiths professionally perform things. First measure the hole with measuring tape, then cut the wood hole blade according to the hole size and fit the rig with the blade.The next process is to attach a lock over it by using glue and sandpaper. Locksmith Houston is a company popular for executing filling up lock hole process in wooden doors.